680123 has 2 divisors, whose sum is σ = 680124. Its totient is φ = 680122.

The previous prime is 680107. The next prime is 680129. The reversal of 680123 is 321086.

680123 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 680123 - 2⁴ = 680107 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 680095 and 680104.

It is not a weakly prime, because it can be changed into another prime (680129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 340061 + 340062.

It is an arithmetic number, because the mean of its divisors is an integer number (340062).

2⁶⁸⁰¹²³ is an apocalyptic number.

680123 is a deficient number, since it is larger than the sum of its proper divisors (1).

680123 is an equidigital number, since it uses as much as digits as its factorization.

680123 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 680123 is about 824.6957014560. The cubic root of 680123 is about 87.9418951828.

The spelling of 680123 in words is "six hundred eighty thousand, one hundred twenty-three".